{
  "instruction": "Use DTOs as C# records with static From() factory methods",
  "relevant_when": "Agent defines API request or response types in an ASP.NET Core project",
  "context": "DTOs must be C# records (not classes) in a DTOs/ folder. Response DTOs must include a static From() factory method that maps from the entity type. Models use class keyword with { get; set; } properties.",
  "sources": [
    {
      "type": "file",
      "filename": "skills/aspnet-project-structure/SKILL.md",
      "tile": "tessl-labs/aspnet-project-structure@0.1.3"
    }
  ],
  "checklist": [
    {
      "name": "dtos-are-records",
      "rule": "Agent declares DTOs using the C# 'record' keyword, not 'class'",
      "relevant_when": "Agent creates request or response types for an ASP.NET Core API"
    },
    {
      "name": "dto-from-factory",
      "rule": "Agent adds a static From() factory method to response DTOs that maps from the corresponding entity type",
      "relevant_when": "Agent creates a response DTO that corresponds to a database entity"
    },
    {
      "name": "dtos-in-folder",
      "rule": "Agent places DTOs in a dedicated DTOs/ folder, not inline in controllers or services",
      "relevant_when": "Agent creates DTO types in an ASP.NET Core project"
    }
  ]
}